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APPLICATION FILED IAN. 5, 1906.

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APPLICATION FILED JAN. 5, 1906.

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FORMING MACHINE.

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14 SHEETS-SHBET 13.

Patented Feb. 9, 1909.

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NITED STATES PATENT OFFICE.

ALBERT rsssoN, or PROVIDENCE, RHODE ISLAND, ASSIAGNOR, BY MESNE ASSIGNMENTS,

TO J. JONES COMPANY, BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHU- `Fon1aINe-MAGHINE.

Patented Fer. 9, 1909.

Appieagn mea January 5, 190e. serial No. 294,708.

To all whom it may concern:

Be it known that I, ALBERT T; SIss'oNof Providence, in the county vof Providence and State of Rhode Island, have invented certain new and useful improvements in Forming- Machines, of which the following is a specification.

My invention relates to machines for forming metal, and more particularly to those for producing `ball blanks, such as are described in Patent No. 801267, of October 10,1905, to Marcellus Reid. Its principal objects are to adapt a machine of this character to operate upon stock fed horizontally and to generally simplify and improve its construction.`

In the accompanying drawings, in which similar characters designate like parts throughout the several views,-Figure 1 is a top plan view of 'one embodiment of my invention; Figs. 2 and 3 are side elevations' thereof, looking toward the rear of Fio. 1 and showing, respectively, the right and'left hand portionsthere'of; Fig. 4 is an end elevation, `looking from the right in Fig. 1; Figs. 5 and 6 are enlargedvertical sections v on the line 5 5 of Fig.l1, showingsuccessive positionsof the elemen s; Fig. 7 is asimilar view, taken in a plane at right angles to the feeding sleeve;

Figs. 5 and 6; Fig. 8 is a full transverse section on. the line 8-8 of Fig. 7 ;'Fig. 9 is a detail in top plan of the caslng at the end of Fig. 10 kshows in'longitudinal section the feedingguide sleeve, with its rretaining members separated from it; Fig. 11 is a transverse section on the line 11-11 of Fig. 6; Fig. 12 is a detail in side elevationof the feeding and gage mechanism; Fig. 13 is a sectional detail on the line 13-13 of Fig. 12v; Fig. 14 is a detail in elevation of the driving-lever forthe feeding mechanism; Fig. 15. iis a vertical section therethrough on the line 15-15 of'Fig. 14; Fig. 16 shows in side elevation the conveying mechanism and one of the'dies, parts being in section; Fig. 17 is an enlarged horizontal section on the line `17-17 of Fig. 16; Fig. 18 illustrates another position of the conveying mechanism; Fig. 19 is a sectional detail 'on the line 19-19 of Fig.,18j; Fig.' 20" and more closely associated elements. Fi 21 is an enlarged sectional detailv throng the gage and guide mechanism; Fi 22 is an enlarged sectional detail upon t eline 22-22 of Fig. `2; Fig. 23 is a longitudinal section on the line -23-23 of Fig. 22; Fig. 24 is a broken sectional detail upon the line 24-24 on Fig.'23; Fig. 25 is a vertical sectional detail upon the line 25-25 of Fig. l; Figs. 26 to 28, inclusive, illustrate successive positions of the dies and more closely asso- -ciated elements; and Fig. 29 is a transverse y sectional detail upon the line 29-29 of Fig. 26. Figs. 30, 31, and 32 illustrate 'somewhat diagrammatically the plungers and cams which cooperate therewith to position and hold the work with relation to the cutters.

In the frame 20 are mounted lower and upper cutters 21 and 22, respectively, (Figs.

t l to 4). The former is secured upon a shaft 23 rotatable in fixed bearings in the frame. At one extremity of this shaft is a gear 24 meshin with'a pinion '25`upon a shaft 26 rotatab e in the frame, and having fast upon it a. bevel-gear 27 coperating with a bevel-pinion 28 upon a driving-shaft 29, which may be rotated `through a pulley 30 and any convenient source of power. The upper cutter 22 is' attached to a shaft 31, preferably adjustably mounted to permit the proper relation. of the cutters to be maintained as they become reduced in use. This .mounting may consistl of a bearing-block 32 movable upon a vertical extension 33 from the frame, said extension carrying a threaded lug 34 to receive a screw 35, a head 36 of which is rotatable in the bearin block. `Upon theupper end of the screw 1s fixed a hand-wheel 37, or the like, by which it may be rotated to raise and lower the bearing-block. The shaft 31 is connected by an arm 38 to a stud 39 fixed to an arm 40,l

- l ,l which yare eccentr-ieto the. disks "and "which is a vertical sectional detail through the dies have spaces between their ends, as is fully set forth in the above-mentioned patent.

Mounted upon an arm 45 from the frame is mechanism for feedingl stock to' the cutters,

this being more particularly illustrated in cuttersby a screw 48 rotatable in a `lug 49 vupon the main frame and threaded into the frame 47. Theposition of the latter elements may be fixed by screws 50 engaging the main-frame and extending through vertical slots 51 in the adjustable frame. In

the'support 46 are situated bearings 52 for a feeding sleeve ,53 having a head 54 contacting with the bearings at one end and a nut 55 retaining it against movement at the opposite end. Carried by the head is a hollow cylindrical casing 56, attached to the head, so that it may move longitudinally thereon, by screws 57 projecting from the head intoelongated slots 58 in the casing. Fulcrumed in recesses in the head are grip ping levers 59, 59, having reduced edges 60 for contact with the stock, these edges being eccentric through radii increasing in the direction of feed. At the opposite ends the levers have reduced ends 61 extending int-o slots 62 in the casing for contact with inclined walls 63, 63, at each side thereof. Springs 64 are pressed between the head of the casing and that of the feeding sleeve, and serve to force said casing normally outward, tending to swingthe gripping levers into-engagement with the stock or rod. j

rIhe edges 60 of the levers project through opposite slots 65 ina guide sleeve 66 which extends into the feeding sleeve,-it having a bearing therein, while at its other end it is rotatablevin. a relatively iXed bearing 67. Between the `slots65, about 90 therefrom,

are slots 68 for the reception of retaining bars 69, which are provided near their opposite ends with contact projections 70 for engaging the stock. This engagement tends to Aprevent movement of the stock, and is effected by plungers71 operating in bores at the outer side of the head 54, their inner ends resting against the retaining parts,

into contact with which they are forced by springs 72 abutting at their opposite eX- tremities against screws 73, rclosing the bores. j

The support 46'and the elements carried thereby, as here illustrated, are reciprocated or driven by a lever L (Figs. 2, 12, 15, 22,

23 and 24) fulcrumed upon the main. frame and having a fork 75 in which slides a block 7 6.' This block is mounted to oscillate upon a pin 77 projecting vfrom a slide 77 a, which is shown as movable between the support and a retaining member 77b'fixed to the support and straddling'the slide. Rotatable in the slide is a screw 7 7` threaded into the retainin@ member and serving to adjust its position upon the support. By this meansthe termination of the stroke upon the Support may be adjusted with relation to Athe cooperating elements. At the lower end of the lever is a projection 78 enterino' a campath 79 in a cylinder 80. rlhis cylinder is rotatable about the shaft 26 and is connected to turn at a reduced speed by a pinion 81 (Fig. 13) keyed to the shaft and meshing with an idler 82 carried by a stud 83 fixed to the frame, said idler`meshing with an internal gear 84 about the cylinder.

To provide for a connection which may be readily severed in case of any exigency tending to choke or stop the action of the feeding mechanism, and thus prevent the breakage thereof, the lever L is formed in two sections (Figs. 14 and 15), the lower 85 of which is fulcrumed upon the frame, while the upper section 86` carries the fork 75. In the adjacent overlapping arms of these lever sections are alined openings in which are inserted hardened bushings 87 to receive a safety, or readily divisible, pin 87.` When any undue strain is put upon the lever this pin will be sheared off by the bushings throwing the feeding mechanism out of connection and allowing it to be cleared before operation is resumed.

Situated above and below the support 46 are shown arms 88 carrying contact members 89 lying in the path of a flange 90 on the casing. These contact members arrest the movement of the casing, causing the springs 64 to yield, and, as the feeding head continues in motion, the gripping levers are swung upon their fulcra by the approaching walls 63 of the slots 62, so that the engaging edges of the levers are moved upwardly out of coperation with the stock. To allow a varying in the time of release the arms 88 arepreferably attached to the frame by 4screws 91 passing through L slots in the edges into coaction with a rod or piece of -stock S, projecting in a horizontal direction through the feeding-sleeve into thel guide sleeve andv which is to be operated upon. The eccentricity of the engaging edges is such that any tendency of the stock to withdraw from them causes them to bite more firmly into it. The continued vtravel of the support advances the stock into the space between the edges of the cutters, this continuing until the flange of the casing contacts with the members 89. The resultant upward movement of the engaging edges previously described frees the stock, permitting it to be pushed back by the gagel'od 93 regulating the length of the slug.

Adjacent to the opposite side of the cutters and 21) mounted to reciprocate in a bracket 94 carried by a late 95 supported upon the frame. The r at its upper endis threaded into a plunger 96, the connection lbetween the two and the position `of the gagerod with relation to the end ofthe stock thus being capable of adjustment. The rod is fixed against accident-al movement by a nut 97, the plunger slides tin' l1 a bracket 98 projecting from the plate an has .at its outer extremity a roll 99 for Contact with a camfa-ce 100 extending about the outer portion of the face of a disk 101l fast u on the shaft 23. A spring 102 is interposed) between the bracket 94 and 'anut' 103 on the plunger, exerting its tension to maintain the contact of the roll and cam-face, the latter thus causing the ga e-rod to be reciprocated toward and from t e cutters. vThe feed of stock by the mechanism heretofore described,"is preferably somewhat in excess of the proper amount, to insure a suliicient length bein projected. The movement of the gage-ro. serves to return the stock tothe correct position, while the members 68 within the guide sleeve 66 retain the stock in the exact position to which itis thus readjusted.

It will be understood thatfthe feed'mech- :mism described is adapted to yieldably` feed the stock in onedirection, and that the gage rod 93 is freely movable in adirection opposite to the direction of feed of the stock. In other words the gage is freely movable by the cam face 100 because thereis nothing to oppose movementltoward the stock other than the spring 102. The degree of movement which is given to the ga e in a direction opposite to thedirection o feed of the stock is controlled by the said cam face 100, said cam face constituting, in this embodiment of the invention, automatic means which will intermittently move the gage `toward the stock.

Surroundi the gage-rod and havin its end in proximity to the meeting point o the cutters is :il-receiving guide sleeve 104, which is shown as provided near its louter extremity with flanges 105, 106, forming a way to receivean arm 106 for an operating rod 107 slidable in the bracket 94. At the side of the bracket opposite this guide, sleeve the rod 107 preferablyhas a. head 108 movable within a chamber .108*in a rod section 108.",

the exterior of which yis s uare and passes through a' similar opening 1n the bracket 98 in which it is free to slide. The rod section 108*7 has rotatable u on it a roll 109 for contact with a cam sur ace 110 projecting from the disk 101inside thel face 100. A spring 111 lying between the bracket 94 and a land 112 snrroundin the operating rod and eing threaded into t e section 108D, maintains the eoperation of the cam surface and the roll.

lyield, permittin be moved over t ie rod by the cam, without.

`slots 117 in Within the chamber 108B, between its inner end and the head upon the rod, is a spring 11B oi'eri such resistance to compression that" it wi 'not be atiected'in the normal operation of the apparatus, thus allowing the rod and its section 108h to move as a unit. If, however, the guide-tube becomes clogged or jammed in. any manner, this spring will the chambered sectionV to danger of breaking any ofthe parts, thus continuing until all obstruction has been removed. Fixed to this section 108", is shown a collar 114% which as will be hereinafter described, may. at times Contact with the fork 114, compelling the gage-rod and guide-tube to move together.

To furnish a suitable bearing for the guide-sleeve 104 u on the gage-rod, upon which it depends 01' support, a series of rolls 115 maybe carried by the sleeve. The reciprocation'of lthe receiving sleeve by its cam-face advances it into proximity to the cutters to support the severed piece of stock, and then withdraws it to allow the removal of said piece.

rThe proper alinement of the Gre-rod and. receiving-tube with the edges attire cutters, as theseare lowered, may be provided for by fixing the supporting plate 95 to the main frame by screws 116 extending through the plate. These screws serve to clamp the plate in one position or another, to which it may be moved by a screw 118 threaded through a lug 119 upon the plate and resting at itsrlower extremity against a horizontal surface upon the main frame.

At one side of and in the same horizontal j plane as the cooperating edges of the cutters' are opposed dios 120'and 121 (Figs. 1, 16, 20, and 25 to 28, inclusive). ln the dies are depressions 122' meeting to furnish a cavity having the form of the object to be produced.' The die 120 is ixed during the operation of the machine, but may beadjusted toward and from its companion by its support 123, which has a threaded stem ,124 engaging an internally threaded sleeve 125. This sleeve is mounted in a. bore in the frame and is rotatable, the stem and Wallof the bore preferablyhaving a coacting spline and groove to prevent the former from turning. The parts may be locked in their adjusted position by a nut 126 carried by the stem and contacting with the frame. The support of the die 121 has a smooth stem 127 operating in a bore in the frame and bein splined thereto. This stem is recipro cateV to move the die from its companion by means of a connecting-rod R, 'having a spherical head 128 'entering a socket 129 in the stem. The connecting-rod near its outer extremity is connected to a crank-pin 130 upon a'shaft 131 rotatable in the frame and having a gear 132 meshing with a pinion Upon the inner facie of each die support is a plate 137 provided with vertical slots '138 to receive screws 139 threaded into the support and which may be used to tix the pla-tes in position. When the screws are loosened the plates may be raised or lowered to compensate for the change in positionof i the cuttin edges, by means of screws 140 rotatable 1n brackets 141 projecting from the tops of the supports and engaging threads in the plates. Secured between each plate and the' support, is a block 142 threaded to receive a collar 143 surrounding the die and o erating to hold said die upon the block. ltach die and block is preferably provided with alined recesses, in which are situated receiving and.v ejecting plungers or pins 144 and 145, in the dies 120 and 121, respectivelv, which project through openings in the diedepressions. Each pin is shown as threaded to receive pairs of nuts 146 146, furnishing a head, and each pair of nuts may be locked in position on the pin by contacting with an intermediate washer 146a maintained against rotation upon thev pin by a projection 146b entering a slot 146c extendinglongitudinally of said pin. The recesses in the die-blocks and dies are of different depths, that of the die 121 and its block being deeper than that of its companion. The ins 144 and 145 are of dierent lengths om the nuts 146 outwardly, so that when-the nuts are in contact with the ends of the die recesses, the pin 145 projects farther through the die toward i s companion thanvthe pinv 144. Situated between the nuts and the inner walls of the recesses, are springs 147 and 147, surrounding the pins 144 and 145, respectively. These springs are preferably formed from wire of the same gage, and have convolutions of the same diameter; but the first-named is of less length, and is therefore less sensitive to compression than the spring 147% rllhe end of each pin prefera ly-ha-s ay conical recess to receive the end of the piece severed by the cutters.

lloconvey the severed piece from the cutters "to the dies, l provide mechanism shown in Figs 1 and 2, and more in detail in Figs. 6, 16, 17, and 18. Said conveying mechanism is supported, by and horizontally movable in suitable guides of a supporting arm 14S. 'llhe arm 148 extends in a plane transverse to that of the movement of the work-feeding mechanism and of the forming` die 121,

.and is provided with an opening 150,

4through which the receiving sleeve 104 proeinem jects to receive the end of the blank from which the pieces are severed.

The conveying mechanism comprises primarily a support or carriage 149 movable in the aforementioned guides, a drivinglever L connected thereto, and a cylinder-cam 151 for operating said lever. The support 149 has an extension 152, which is forked and adapted to straddle the receiving sleeve 104, and which carries the studs 153, upon which are pivoted a pair of co-acting jaws 154 154, adapted to grasp and hold between them each piece o worlrwhich is severed by the cutters. Said jaws have bell-crank arms 155, lwhich are connected to a member 157 by means of pivoted links 156 156. The connecting member 1-57 is clamped in one end of an operating member 158, and is adjustable to compensate for adjustment of the extension 152, as hereinafter described. rlhe member 158 is supported in lugs 159 upon the movable support 149, and is movable relatively thereto in a direction parallel to the movement of the support itself. This relative movement of the member 158. is limited by adjusting-nuts 160 26() threaded on the outer end thereof at a suitable distance apart, and adapted to abut against op osite sides of a lug 162 projecting from tie support 149 into the space between said nuts. The member 158 has a vertical slot 161 about midway between its ends, in which a stud 163 carrying a swiveled block 164 is adjustably clamped. Said block occupies a radial slot 165 in the upper end of the lever L. The slots 161 and 165 provide for vertical adjustment of the stud 163, for the purpose of varying the extent of movement imparted to the conveying mechanism by the lever L. The lever L is fulcrumed upon -a stud 166 adjustably mounted in-an arm 167 projecting from the main frame 20, and carries at its lower end a trundle-roll 168, which projects between the parallel cam surfaces 169 169 extending around the eriphery of the cylinder 151. The cylin er 151 is aiiixed upon a shaft 170 extending at right angles to the shaft 26 and in a lower plane relatively thereto. A spiral gear 171 affixed to the shaft 170 intermeshes with and is rotated by.a spiral-gear 172 affixed to the shaft 26, at a speed ration equal to that of the internal gear-84 relatively to its driving pinion 81, and to that of the gear 132 relatively tothe pinion 133.

The movement ofthe jaw-operating member 158 relatively to the support 149, and which is gaged by the relative positions of the nuts 16() 260, is caused by the initial movement of the lever L upon each re- Versal of direction of its oscillation. Therefore, inasmuch as the fuicra 153 of the jaws i 154 are immovable relatively to the support 149, the initial movement of the member 158 causes the jaws to open or to close, accord ingto the. direction of; movement of* said member, previous toainyv movementy imparted tothe' conveying mechanism as a unit.

In Figs. 16 and 1S',- the-'lever L is represented as moving from right to left, as indi-v cated by arrows. In Fig. 16, the jaws are held open by the force which presses the nut 160 against the right-hand side of the lug 162, .andv thereby moves the conveying parts as a unit. The distance to which the jaws may open is limited by the extent of excess motion of the member15'8L permitted by the nuts 160 andV 260. In Fig. 18, the lever is representadas having reversed its direction and to have moved the member 158 and the nut 260 nearl as far to the right as the lug 162 permits; hejawsltare therefore so nearly closed that if a piece of the work were in position, it: would be tightly,

grasped between them, asshown by dotted lines in Fig. 6. The'work therefore acts as a stop for arresting, the movement of the member 1'58 relatively to the support 149, and for causing the Whole carriage to move as a unit. In the absence of the work, the nut 260 may engage the'left side of theA lug 162, and so relieve the jaws of the strain when moving the support 149.

It willbe seen by reference to Fig. 1, that the cam surfaces 169 com rise inoperative portions 169, between which. the roll`I 168- dwells. immovably soon after its. directionof. movement is reversed. This dwell occurs` immediately after the' closing of the jaws. upon the work, but beforemovement of thev support.' 149 toward the dies, and causesthe jawstosurround the end of the work, and so to-rel-ieve the receiving sleeve 104 ofy that duty--- during the inalstage of the severing operation. After the passa e of: the inoperative portion; of the ca-m, te conveying mecha-nismmovesas a unit toward the forming'dies, and stops when the.

severed piece is4 1n alineinentfwith the,` receiving pins 144s and 145, whichl close` upon it immediately. Reverse movementI of the lever L then causes the jaws to separate, and when the nut 160 once more engages the right side of the 1ug-162, causes the lmechanism to return tothe-cutters.

The partal,v which is hereinbefo'rea rei-ferred to as an extension of the support. 149,

is rigidlyl clamped against-4 said support by mea-ns of a screw 173'., A shoulder 149:*4 on thel supportpreventsthe extension from turning about the screw (ses Fi 17 )j2 and a slot 152EL inthe extension throu which the screw extendspermits adjustment of the ex-` cutters are preferab Iir. order to: ietardlthe.- movement ofthe. support 149. at; the completion of each stroke, and so to proventiexcess movement thereof` relatively to that ofthe member 1'58, which would otherwise be caused by momentum toV l,close or open the jaws prematurel a: suitable device'is attached2 to the backside .of the arm. 148,..l andconnected-f to thev support; Uponthe inner side of the support is-.arack 174, withwhich coperatesa pinion 175 secured.' upon-.a shaft 176 journaled upon the rear ofthe arm-14:8. Theupper endl ofthe travel of thesupport, thus-preventing movement beyondthe point at which the driving leven ceases to act, without. introducing an unnecessary drag.

The general operation of the machine is as follows: A rod ofthe material-to be operated upon being within the feeding and the guide sleeves, 1t is gripped and advanced through the space between the cutting edges into the .receiving sleeve to adistance sli htly in excess of that desired. The grip o the. feeding mechanism is then released, and the gage-rodforces the-stock back between the-I retaining members to the correct position.

rNew the-ed esiof thecutters enter, theA stock and divide 1t, thus. accomplishing the rstA operation; AsY these y rotatable in thel same' direction, the stock will be `rotated during.

step in the forming this-operation, but this occurs without.- strain uponfthe feeding mechanism byvirtue of lthe rotation of the support. '.fter'the-gagerod has. positioned the stock, the. receiving, tube-iswithdrawn for a portion ofthe trave though still coperating withthe stock, to

enable-the conveying jaws to close upon the partially severed' piece or slug. When this has been. accompllshed, the .collar 114.31 contacts with. `the fork 114, and the cam-face leaves the' roll:1'09; .The gage-rod and-said;

tube are both' drawn back abruptly and. simultaneously by the springs 1'11 and'102, to= fully free the slug, which is now com-Y pletely severed. The jaws then travel-into the path offthe' dies, delivering the piece between thev endsof the pins 144 and 14'5; The movable' die-now advances, causing the pins to grasp the .piece between them. On account of" the oreater sensitiveness of' the.

spring-.147, and as the movement of` the. diel 141 continues, the pin Mois forced into the.. recess, while the compfrilrllonin remains stationary (Fig. 26). ilev t is is occurring,

the conveying jaws separate, and are withdrawn. The extension of the pins is now substantially the same, and as the movable die continues its advance, the springs are compressed at the saine rate, since their sensitiveness is now practically equal, causing the adjacent ends of the pins to reach the rear of the die-depressions simultaneously. The nuts are now -in contact with the outer walls of the recesses, so that the ends of the pins are held in their proper relation to the die-depressions, furnishing' a portion of the walls thereof (Fig. 27). Then the completion of the travel of the die compresses the piece to the desired form (Fio'. 28) and upon its reversal, the springs of both pins cause them to eject the completed blank.

Having thus explained the nature of my invention, I claim:

1. A reciprocatory support, a gripping member movable upon the support, an actuating member for the gripping member movable relatively to the sup ort, and a member with which the actuating member may contact, said contact member being fixed and the actuating member movable into cooperation with it.

2. The combination with forming mechanism, of a reciprocatory feeding sleeve having a head situated adjacent to the forming inechanism,'a movable gripping member'carried by the head, an actuating member encircling the head and overhanging it upon the side toward the forming mechanism, and a spring interposed between the loverhanging portion and head.

3. The combination of a reciprocatory su port, a gripping member movable vu on t e support, a fixed member for moving the gripping member in one direction, and al i spring for moving it in another direction.

4. The combination of areciprocatory support, a gripping member movable upon the support, a fixed member for moving the .gripping member in one direction, and means whereby the'position of said fixed member may be changed.`

5. A. guide sleeve provided with a circumferential series of slots, a feeding sleeve movable over the guide sleeve, gripping members mounted upon the feeding sleeve and projecting through certain of the slots in the guide sleeve, retaining members operating in other of said slots, and yieldable means for v forcing the retaining members through the slots.

6. A guide sleeve provided with a circumferential series of slots, a feeding sleeve movable over the guide sleeve, opposed gripping members mounted upon the feeding sleeve' and projecting through two of the' slots in the guide sleeve, and retaining members op erating in intermediate slots.

7. In a metal working machine, the comeinen bination with forming mechanism, of feed mechanism adapted to yieldably feed the stock, a gage freely movable toward and from the stock, and means for controlling the degree of movement in a direction opposite to the direction of feed of the stock.

8. In a metal working machine, the coinbination with forming mechanism, of feed mechanism adapted to yieldably feed the stock, a movable gage in line with the path of the feed, and automatic mechanism arranged to intermittently move the ga e in a direction opposite to the direction of eed.

9. A conveying mechanism comprising a traveling support, jaws movable upon the support, an operating member movable upon the support and being connected to the jaws, and separated contact members carried by the operating members and alternately contacting with the support.

l0. The combination of conveying mechanism, comprising a traveling support, jaws movable upon the support, an operating member movable upon the support and being connected to the jaws, cooperating contact members carried by the support and operating member, and means for permitting an adjustment of one of the contact members with` respect to the other.

11. The combination of conveying mechanism comprising a traveling support, jaws movable upon the support, an operating member mounted to slide upon the` support and having a threaded ortion, nuts situated upon the threaded portion for alternate contact with the support during the movement of the operating member, and connections between the operating member and jaws.

12. The combination with forming mechanism, of conveying mechanism comprisin an adjustable traveling support provide with an independently movable portion, jaws pivoted upon the movable portion, an operating member for the jaws carried by the support, and adjustable connections between the operating member and jaws, whereby the adjustment of the support may be compensated for.

13. A feeding sleeve, and a guide sleeve situated within the feeding sleeve, and having yieldable sections adapted to contact with lthe work at a plurality of separated points.

14. A feeding sleeve, and a giude sloove having openings extending longitudinally of the werkend being situated Within the feeding sleeve, and elongated yieldable seetions movable through the openings.

15. A feeding sleeve, a guide sleeve having openings and being situated within the feeding sleeve and being provided with elongated yieldable sections movable through the openings, plungers movable in the feeding sleeve, and contacting with the sections be- 

